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Interactive effects of substrates and ectomycorrhizal colonization on growth of a poplar clone
Author(s) -
Baum Christel,
Schmid Katja,
Makeschin Franz
Publication year - 2000
Publication title -
journal of plant nutrition and soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 1436-8730
DOI - 10.1002/(sici)1522-2624(200004)163:2<221::aid-jpln221>3.0.co;2-4
Subject(s) - paxillus involutus , shoot , ectomycorrhiza , botany , biology , populus trichocarpa , horticulture , mycorrhiza , symbiosis , biochemistry , gene , genetics , genome , bacteria
A balsam poplar clone ( Populus trichocarpa cv. Weser 6) was inoculated by two ectomycorrhizal strains ( Laccaria bicolor MW 158 and Paxillus involutus 1444) in Kick‐Brauckmann‐pots. The substrates were two arable sandy soils (Cambisols) with different organic matter content and nutrient supply. One soil (WIL) was rich in organic matter (C org = 1.6%) and total nitrogen (N t = 0.14%), whereas the other soil (RIE) had low contents of C org (0.8%) and N t (0.08%). Leaf nutrient concentrations, shoot lengths, root and shoot biomass production and nitrogen accumulation in the biomass were determined to discover possible inoculation effects. Mycorrhization indices (% colonized fine roots) of 36% with Laccaria bicolor and 40% with Paxillus involutus were observed on the C org rich soil (WIL) in contrast to 16% and 14% on the C org poor soil (RIE), respectively. Inoculation of poplar on the soil WIL increased shoot length, biomass production, shoot:root ratio and total N uptake of the cuttings, whereas on the soil RIE only the shoot:root ratio increased and the N nutrition was improved. We conclude that interactions between soil and fungus should be tested when choosing ectomycorrhizal strains for inoculation.